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FFmpeg/libavcodec/crystalhd.c
Philip Langdale d0a9af851e crystalhd: Update high level description 
We don't need to document the horrible hacks that we removed.
2016-11-02 13:47:57 -07:00

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/*
* - CrystalHD decoder module -
*
* Copyright(C) 2010,2011 Philip Langdale <ffmpeg.philipl@overt.org>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/*
* - Principles of Operation -
*
* The CrystalHD decoder operates at the bitstream level - which is an even
* higher level than the decoding hardware you typically see in modern GPUs.
* This means it has a very simple interface, in principle. You feed demuxed
* packets in one end and get decoded picture (fields/frames) out the other.
*
* Of course, nothing is ever that simple. Due, at the very least, to b-frame
* dependencies in the supported formats, the hardware has a delay between
* when a packet goes in, and when a picture comes out. Furthermore, this delay
* is not just a function of time, but also one of the dependency on additional
* frames being fed into the decoder to satisfy the b-frame dependencies.
*
* As such, the hardware can only be used effectively with a decode API that
* doesn't assume a 1:1 relationship between input packets and output frames.
* The new avcodec decode API is such an API (an m:n API) while the old one is
* 1:1. Consequently, we no longer support the old API, which allows us to avoid
* the vicious hacks that are required to approximate 1:1 operation.
*/
/*****************************************************************************
* Includes
****************************************************************************/
#define _XOPEN_SOURCE 600
#include <inttypes.h>
#include <stdio.h>
#include <stdlib.h>
#include <libcrystalhd/bc_dts_types.h>
#include <libcrystalhd/bc_dts_defs.h>
#include <libcrystalhd/libcrystalhd_if.h>
#include "avcodec.h"
#include "internal.h"
#include "libavutil/imgutils.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/opt.h"
#if HAVE_UNISTD_H
#include <unistd.h>
#endif
/** Timeout parameter passed to DtsProcOutput() in us */
#define OUTPUT_PROC_TIMEOUT 50
/** Step between fake timestamps passed to hardware in units of 100ns */
#define TIMESTAMP_UNIT 100000
/*****************************************************************************
* Module private data
****************************************************************************/
typedef enum {
RET_ERROR = -1,
RET_OK = 0,
RET_COPY_AGAIN = 1,
} CopyRet;
typedef struct OpaqueList {
struct OpaqueList *next;
uint64_t fake_timestamp;
uint64_t reordered_opaque;
} OpaqueList;
typedef struct {
AVClass *av_class;
AVCodecContext *avctx;
HANDLE dev;
uint8_t *orig_extradata;
uint32_t orig_extradata_size;
AVBSFContext *bsfc;
uint8_t is_70012;
uint8_t *sps_pps_buf;
uint32_t sps_pps_size;
uint8_t is_nal;
uint8_t need_second_field;
uint8_t draining;
OpaqueList *head;
OpaqueList *tail;
/* Options */
uint32_t sWidth;
uint8_t bframe_bug;
} CHDContext;
static const AVOption options[] = {
{ "crystalhd_downscale_width",
"Turn on downscaling to the specified width",
offsetof(CHDContext, sWidth),
AV_OPT_TYPE_INT, {.i64 = 0}, 0, UINT32_MAX,
AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM, },
{ NULL, },
};
/*****************************************************************************
* Helper functions
****************************************************************************/
static inline BC_MEDIA_SUBTYPE id2subtype(CHDContext *priv, enum AVCodecID id)
{
switch (id) {
case AV_CODEC_ID_MPEG4:
return BC_MSUBTYPE_DIVX;
case AV_CODEC_ID_MSMPEG4V3:
return BC_MSUBTYPE_DIVX311;
case AV_CODEC_ID_MPEG2VIDEO:
return BC_MSUBTYPE_MPEG2VIDEO;
case AV_CODEC_ID_VC1:
return BC_MSUBTYPE_VC1;
case AV_CODEC_ID_WMV3:
return BC_MSUBTYPE_WMV3;
case AV_CODEC_ID_H264:
return priv->is_nal ? BC_MSUBTYPE_AVC1 : BC_MSUBTYPE_H264;
default:
return BC_MSUBTYPE_INVALID;
}
}
static inline void print_frame_info(CHDContext *priv, BC_DTS_PROC_OUT *output)
{
av_log(priv->avctx, AV_LOG_TRACE, "\tYBuffSz: %u\n", output->YbuffSz);
av_log(priv->avctx, AV_LOG_TRACE, "\tYBuffDoneSz: %u\n",
output->YBuffDoneSz);
av_log(priv->avctx, AV_LOG_TRACE, "\tUVBuffDoneSz: %u\n",
output->UVBuffDoneSz);
av_log(priv->avctx, AV_LOG_TRACE, "\tTimestamp: %"PRIu64"\n",
output->PicInfo.timeStamp);
av_log(priv->avctx, AV_LOG_TRACE, "\tPicture Number: %u\n",
output->PicInfo.picture_number);
av_log(priv->avctx, AV_LOG_TRACE, "\tWidth: %u\n",
output->PicInfo.width);
av_log(priv->avctx, AV_LOG_TRACE, "\tHeight: %u\n",
output->PicInfo.height);
av_log(priv->avctx, AV_LOG_TRACE, "\tChroma: 0x%03x\n",
output->PicInfo.chroma_format);
av_log(priv->avctx, AV_LOG_TRACE, "\tPulldown: %u\n",
output->PicInfo.pulldown);
av_log(priv->avctx, AV_LOG_TRACE, "\tFlags: 0x%08x\n",
output->PicInfo.flags);
av_log(priv->avctx, AV_LOG_TRACE, "\tFrame Rate/Res: %u\n",
output->PicInfo.frame_rate);
av_log(priv->avctx, AV_LOG_TRACE, "\tAspect Ratio: %u\n",
output->PicInfo.aspect_ratio);
av_log(priv->avctx, AV_LOG_TRACE, "\tColor Primaries: %u\n",
output->PicInfo.colour_primaries);
av_log(priv->avctx, AV_LOG_TRACE, "\tMetaData: %u\n",
output->PicInfo.picture_meta_payload);
av_log(priv->avctx, AV_LOG_TRACE, "\tSession Number: %u\n",
output->PicInfo.sess_num);
av_log(priv->avctx, AV_LOG_TRACE, "\tycom: %u\n",
output->PicInfo.ycom);
av_log(priv->avctx, AV_LOG_TRACE, "\tCustom Aspect: %u\n",
output->PicInfo.custom_aspect_ratio_width_height);
av_log(priv->avctx, AV_LOG_TRACE, "\tFrames to Drop: %u\n",
output->PicInfo.n_drop);
av_log(priv->avctx, AV_LOG_TRACE, "\tH264 Valid Fields: 0x%08x\n",
output->PicInfo.other.h264.valid);
}
/*****************************************************************************
* OpaqueList functions
****************************************************************************/
static uint64_t opaque_list_push(CHDContext *priv, uint64_t reordered_opaque)
{
OpaqueList *newNode = av_mallocz(sizeof (OpaqueList));
if (!newNode) {
av_log(priv->avctx, AV_LOG_ERROR,
"Unable to allocate new node in OpaqueList.\n");
return 0;
}
if (!priv->head) {
newNode->fake_timestamp = TIMESTAMP_UNIT;
priv->head = newNode;
} else {
newNode->fake_timestamp = priv->tail->fake_timestamp + TIMESTAMP_UNIT;
priv->tail->next = newNode;
}
priv->tail = newNode;
newNode->reordered_opaque = reordered_opaque;
return newNode->fake_timestamp;
}
/*
* The OpaqueList is built in decode order, while elements will be removed
* in presentation order. If frames are reordered, this means we must be
* able to remove elements that are not the first element.
*
* Returned node must be freed by caller.
*/
static OpaqueList *opaque_list_pop(CHDContext *priv, uint64_t fake_timestamp)
{
OpaqueList *node = priv->head;
if (!priv->head) {
av_log(priv->avctx, AV_LOG_ERROR,
"CrystalHD: Attempted to query non-existent timestamps.\n");
return NULL;
}
/*
* The first element is special-cased because we have to manipulate
* the head pointer rather than the previous element in the list.
*/
if (priv->head->fake_timestamp == fake_timestamp) {
priv->head = node->next;
if (!priv->head->next)
priv->tail = priv->head;
node->next = NULL;
return node;
}
/*
* The list is processed at arm's length so that we have the
* previous element available to rewrite its next pointer.
*/
while (node->next) {
OpaqueList *current = node->next;
if (current->fake_timestamp == fake_timestamp) {
node->next = current->next;
if (!node->next)
priv->tail = node;
current->next = NULL;
return current;
} else {
node = current;
}
}
av_log(priv->avctx, AV_LOG_VERBOSE,
"CrystalHD: Couldn't match fake_timestamp.\n");
return NULL;
}
/*****************************************************************************
* Video decoder API function definitions
****************************************************************************/
static void flush(AVCodecContext *avctx)
{
CHDContext *priv = avctx->priv_data;
priv->need_second_field = 0;
priv->draining = 0;
/* Flush mode 4 flushes all software and hardware buffers. */
DtsFlushInput(priv->dev, 4);
}
static av_cold int uninit(AVCodecContext *avctx)
{
CHDContext *priv = avctx->priv_data;
HANDLE device;
device = priv->dev;
DtsStopDecoder(device);
DtsCloseDecoder(device);
DtsDeviceClose(device);
/*
* Restore original extradata, so that if the decoder is
* reinitialised, the bitstream detection and filtering
* will work as expected.
*/
if (priv->orig_extradata) {
av_free(avctx->extradata);
avctx->extradata = priv->orig_extradata;
avctx->extradata_size = priv->orig_extradata_size;
priv->orig_extradata = NULL;
priv->orig_extradata_size = 0;
}
if (priv->bsfc) {
av_bsf_free(&priv->bsfc);
}
av_freep(&priv->sps_pps_buf);
if (priv->head) {
OpaqueList *node = priv->head;
while (node) {
OpaqueList *next = node->next;
av_free(node);
node = next;
}
}
return 0;
}
static av_cold int init_bsf(AVCodecContext *avctx, const char *bsf_name)
{
CHDContext *priv = avctx->priv_data;
const AVBitStreamFilter *bsf;
int avret;
void *extradata = NULL;
size_t size = 0;
bsf = av_bsf_get_by_name(bsf_name);
if (!bsf) {
av_log(avctx, AV_LOG_ERROR,
"Cannot open the %s BSF!\n", bsf_name);
return AVERROR_BSF_NOT_FOUND;
}
avret = av_bsf_alloc(bsf, &priv->bsfc);
if (avret != 0) {
return avret;
}
avret = avcodec_parameters_from_context(priv->bsfc->par_in, avctx);
if (avret != 0) {
return avret;
}
avret = av_bsf_init(priv->bsfc);
if (avret != 0) {
return avret;
}
/* Back up the extradata so it can be restored at close time. */
priv->orig_extradata = avctx->extradata;
priv->orig_extradata_size = avctx->extradata_size;
size = priv->bsfc->par_out->extradata_size;
extradata = av_malloc(size + AV_INPUT_BUFFER_PADDING_SIZE);
if (!extradata) {
av_log(avctx, AV_LOG_ERROR,
"Failed to allocate copy of extradata\n");
return AVERROR(ENOMEM);
}
memcpy(extradata, priv->bsfc->par_out->extradata, size);
avctx->extradata = extradata;
avctx->extradata_size = size;
return 0;
}
static av_cold int init(AVCodecContext *avctx)
{
CHDContext* priv;
int avret;
BC_STATUS ret;
BC_INFO_CRYSTAL version;
BC_INPUT_FORMAT format = {
.FGTEnable = FALSE,
.Progressive = TRUE,
.OptFlags = 0x80000000 | vdecFrameRate59_94 | 0x40,
.width = avctx->width,
.height = avctx->height,
};
BC_MEDIA_SUBTYPE subtype;
uint32_t mode = DTS_PLAYBACK_MODE |
DTS_LOAD_FILE_PLAY_FW |
DTS_SKIP_TX_CHK_CPB |
DTS_PLAYBACK_DROP_RPT_MODE |
DTS_SINGLE_THREADED_MODE |
DTS_DFLT_RESOLUTION(vdecRESOLUTION_1080p23_976);
av_log(avctx, AV_LOG_VERBOSE, "CrystalHD Init for %s\n",
avctx->codec->name);
avctx->pix_fmt = AV_PIX_FMT_YUYV422;
/* Initialize the library */
priv = avctx->priv_data;
priv->avctx = avctx;
priv->is_nal = avctx->extradata_size > 0 && *(avctx->extradata) == 1;
priv->draining = 0;
subtype = id2subtype(priv, avctx->codec->id);
switch (subtype) {
case BC_MSUBTYPE_AVC1:
avret = init_bsf(avctx, "h264_mp4toannexb");
if (avret != 0) {
return avret;
}
subtype = BC_MSUBTYPE_H264;
format.startCodeSz = 4;
format.pMetaData = avctx->extradata;
format.metaDataSz = avctx->extradata_size;
break;
case BC_MSUBTYPE_H264:
format.startCodeSz = 4;
// Fall-through
case BC_MSUBTYPE_VC1:
case BC_MSUBTYPE_WVC1:
case BC_MSUBTYPE_WMV3:
case BC_MSUBTYPE_WMVA:
case BC_MSUBTYPE_MPEG2VIDEO:
case BC_MSUBTYPE_DIVX:
case BC_MSUBTYPE_DIVX311:
format.pMetaData = avctx->extradata;
format.metaDataSz = avctx->extradata_size;
break;
default:
av_log(avctx, AV_LOG_ERROR, "CrystalHD: Unknown codec name\n");
return AVERROR(EINVAL);
}
format.mSubtype = subtype;
if (priv->sWidth) {
format.bEnableScaling = 1;
format.ScalingParams.sWidth = priv->sWidth;
}
/* Get a decoder instance */
av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: starting up\n");
// Initialize the Link and Decoder devices
ret = DtsDeviceOpen(&priv->dev, mode);
if (ret != BC_STS_SUCCESS) {
av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: DtsDeviceOpen failed\n");
goto fail;
}
ret = DtsCrystalHDVersion(priv->dev, &version);
if (ret != BC_STS_SUCCESS) {
av_log(avctx, AV_LOG_VERBOSE,
"CrystalHD: DtsCrystalHDVersion failed\n");
goto fail;
}
priv->is_70012 = version.device == 0;
if (priv->is_70012 &&
(subtype == BC_MSUBTYPE_DIVX || subtype == BC_MSUBTYPE_DIVX311)) {
av_log(avctx, AV_LOG_VERBOSE,
"CrystalHD: BCM70012 doesn't support MPEG4-ASP/DivX/Xvid\n");
goto fail;
}
ret = DtsSetInputFormat(priv->dev, &format);
if (ret != BC_STS_SUCCESS) {
av_log(avctx, AV_LOG_ERROR, "CrystalHD: SetInputFormat failed\n");
goto fail;
}
ret = DtsOpenDecoder(priv->dev, BC_STREAM_TYPE_ES);
if (ret != BC_STS_SUCCESS) {
av_log(avctx, AV_LOG_ERROR, "CrystalHD: DtsOpenDecoder failed\n");
goto fail;
}
ret = DtsSetColorSpace(priv->dev, OUTPUT_MODE422_YUY2);
if (ret != BC_STS_SUCCESS) {
av_log(avctx, AV_LOG_ERROR, "CrystalHD: DtsSetColorSpace failed\n");
goto fail;
}
ret = DtsStartDecoder(priv->dev);
if (ret != BC_STS_SUCCESS) {
av_log(avctx, AV_LOG_ERROR, "CrystalHD: DtsStartDecoder failed\n");
goto fail;
}
ret = DtsStartCapture(priv->dev);
if (ret != BC_STS_SUCCESS) {
av_log(avctx, AV_LOG_ERROR, "CrystalHD: DtsStartCapture failed\n");
goto fail;
}
av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: Init complete.\n");
return 0;
fail:
uninit(avctx);
return -1;
}
static inline CopyRet copy_frame(AVCodecContext *avctx,
BC_DTS_PROC_OUT *output,
AVFrame *frame, int *got_frame)
{
BC_STATUS ret;
BC_DTS_STATUS decoder_status = { 0, };
uint8_t interlaced;
CHDContext *priv = avctx->priv_data;
int64_t pkt_pts = AV_NOPTS_VALUE;
uint8_t bottom_field = (output->PicInfo.flags & VDEC_FLAG_BOTTOMFIELD) ==
VDEC_FLAG_BOTTOMFIELD;
uint8_t bottom_first = !!(output->PicInfo.flags & VDEC_FLAG_BOTTOM_FIRST);
int width = output->PicInfo.width;
int height = output->PicInfo.height;
int bwidth;
uint8_t *src = output->Ybuff;
int sStride;
uint8_t *dst;
int dStride;
if (output->PicInfo.timeStamp != 0) {
OpaqueList *node = opaque_list_pop(priv, output->PicInfo.timeStamp);
if (node) {
pkt_pts = node->reordered_opaque;
av_free(node);
} else {
/*
* We will encounter a situation where a timestamp cannot be
* popped if a second field is being returned. In this case,
* each field has the same timestamp and the first one will
* cause it to be popped. We'll avoid overwriting the valid
* timestamp below.
*/
}
av_log(avctx, AV_LOG_VERBOSE, "output \"pts\": %"PRIu64"\n",
output->PicInfo.timeStamp);
}
ret = DtsGetDriverStatus(priv->dev, &decoder_status);
if (ret != BC_STS_SUCCESS) {
av_log(avctx, AV_LOG_ERROR,
"CrystalHD: GetDriverStatus failed: %u\n", ret);
return RET_ERROR;
}
interlaced = output->PicInfo.flags & VDEC_FLAG_INTERLACED_SRC;
av_log(avctx, AV_LOG_VERBOSE, "Interlaced state: %d\n",
interlaced);
priv->need_second_field = interlaced && !priv->need_second_field;
if (!frame->data[0]) {
if (ff_get_buffer(avctx, frame, 0) < 0)
return RET_ERROR;
}
bwidth = av_image_get_linesize(avctx->pix_fmt, width, 0);
if (priv->is_70012) {
int pStride;
if (width <= 720)
pStride = 720;
else if (width <= 1280)
pStride = 1280;
else pStride = 1920;
sStride = av_image_get_linesize(avctx->pix_fmt, pStride, 0);
} else {
sStride = bwidth;
}
dStride = frame->linesize[0];
dst = frame->data[0];
av_log(priv->avctx, AV_LOG_VERBOSE, "CrystalHD: Copying out frame\n");
/*
* The hardware doesn't return the first sample of a picture.
* Ignoring why it behaves this way, it's better to copy the sample from
* the second line, rather than the next sample across because the chroma
* values should be correct (assuming the decoded video was 4:2:0, which
* it was).
*/
*((uint32_t *)src) = *((uint32_t *)(src + sStride));
if (interlaced) {
int dY = 0;
int sY = 0;
height /= 2;
if (bottom_field) {
av_log(priv->avctx, AV_LOG_VERBOSE, "Interlaced: bottom field\n");
dY = 1;
} else {
av_log(priv->avctx, AV_LOG_VERBOSE, "Interlaced: top field\n");
dY = 0;
}
for (sY = 0; sY < height; dY++, sY++) {
memcpy(&(dst[dY * dStride]), &(src[sY * sStride]), bwidth);
dY++;
}
} else {
av_image_copy_plane(dst, dStride, src, sStride, bwidth, height);
}
frame->interlaced_frame = interlaced;
if (interlaced)
frame->top_field_first = !bottom_first;
if (pkt_pts != AV_NOPTS_VALUE) {
frame->pts = pkt_pts;
#if FF_API_PKT_PTS
FF_DISABLE_DEPRECATION_WARNINGS
frame->pkt_pts = pkt_pts;
FF_ENABLE_DEPRECATION_WARNINGS
#endif
}
av_frame_set_pkt_pos(frame, -1);
av_frame_set_pkt_duration(frame, 0);
av_frame_set_pkt_size(frame, -1);
if (!priv->need_second_field) {
*got_frame = 1;
} else {
return RET_COPY_AGAIN;
}
return RET_OK;
}
static inline CopyRet receive_frame(AVCodecContext *avctx,
AVFrame *frame, int *got_frame)
{
BC_STATUS ret;
BC_DTS_PROC_OUT output = {
.PicInfo.width = avctx->width,
.PicInfo.height = avctx->height,
};
CHDContext *priv = avctx->priv_data;
HANDLE dev = priv->dev;
*got_frame = 0;
// Request decoded data from the driver
ret = DtsProcOutputNoCopy(dev, OUTPUT_PROC_TIMEOUT, &output);
if (ret == BC_STS_FMT_CHANGE) {
av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: Initial format change\n");
avctx->width = output.PicInfo.width;
avctx->height = output.PicInfo.height;
switch ( output.PicInfo.aspect_ratio ) {
case vdecAspectRatioSquare:
avctx->sample_aspect_ratio = (AVRational) { 1, 1};
break;
case vdecAspectRatio12_11:
avctx->sample_aspect_ratio = (AVRational) { 12, 11};
break;
case vdecAspectRatio10_11:
avctx->sample_aspect_ratio = (AVRational) { 10, 11};
break;
case vdecAspectRatio16_11:
avctx->sample_aspect_ratio = (AVRational) { 16, 11};
break;
case vdecAspectRatio40_33:
avctx->sample_aspect_ratio = (AVRational) { 40, 33};
break;
case vdecAspectRatio24_11:
avctx->sample_aspect_ratio = (AVRational) { 24, 11};
break;
case vdecAspectRatio20_11:
avctx->sample_aspect_ratio = (AVRational) { 20, 11};
break;
case vdecAspectRatio32_11:
avctx->sample_aspect_ratio = (AVRational) { 32, 11};
break;
case vdecAspectRatio80_33:
avctx->sample_aspect_ratio = (AVRational) { 80, 33};
break;
case vdecAspectRatio18_11:
avctx->sample_aspect_ratio = (AVRational) { 18, 11};
break;
case vdecAspectRatio15_11:
avctx->sample_aspect_ratio = (AVRational) { 15, 11};
break;
case vdecAspectRatio64_33:
avctx->sample_aspect_ratio = (AVRational) { 64, 33};
break;
case vdecAspectRatio160_99:
avctx->sample_aspect_ratio = (AVRational) {160, 99};
break;
case vdecAspectRatio4_3:
avctx->sample_aspect_ratio = (AVRational) { 4, 3};
break;
case vdecAspectRatio16_9:
avctx->sample_aspect_ratio = (AVRational) { 16, 9};
break;
case vdecAspectRatio221_1:
avctx->sample_aspect_ratio = (AVRational) {221, 1};
break;
}
return RET_COPY_AGAIN;
} else if (ret == BC_STS_SUCCESS) {
int copy_ret = -1;
if (output.PoutFlags & BC_POUT_FLAGS_PIB_VALID) {
if (avctx->codec->id == AV_CODEC_ID_MPEG4 &&
output.PicInfo.timeStamp == 0 && priv->bframe_bug) {
if (!priv->bframe_bug) {
av_log(avctx, AV_LOG_VERBOSE,
"CrystalHD: Not returning packed frame twice.\n");
}
DtsReleaseOutputBuffs(dev, NULL, FALSE);
return RET_COPY_AGAIN;
}
print_frame_info(priv, &output);
copy_ret = copy_frame(avctx, &output, frame, got_frame);
} else {
/*
* An invalid frame has been consumed.
*/
av_log(avctx, AV_LOG_ERROR, "CrystalHD: ProcOutput succeeded with "
"invalid PIB\n");
copy_ret = RET_COPY_AGAIN;
}
DtsReleaseOutputBuffs(dev, NULL, FALSE);
return copy_ret;
} else if (ret == BC_STS_BUSY) {
return RET_COPY_AGAIN;
} else {
av_log(avctx, AV_LOG_ERROR, "CrystalHD: ProcOutput failed %d\n", ret);
return RET_ERROR;
}
}
static int crystalhd_decode_packet(AVCodecContext *avctx, const AVPacket *avpkt)
{
BC_STATUS bc_ret;
CHDContext *priv = avctx->priv_data;
HANDLE dev = priv->dev;
AVPacket filtered_packet = { 0 };
int ret = 0;
av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: decode_packet\n");
if (avpkt && avpkt->size) {
int32_t tx_free = (int32_t)DtsTxFreeSize(dev);
if (!priv->bframe_bug && (avpkt->size == 6 || avpkt->size == 7)) {
/*
* Drop frames trigger the bug
*/
av_log(avctx, AV_LOG_WARNING,
"CrystalHD: Enabling work-around for packed b-frame bug\n");
priv->bframe_bug = 1;
} else if (priv->bframe_bug && avpkt->size == 8) {
/*
* Delay frames don't trigger the bug
*/
av_log(avctx, AV_LOG_WARNING,
"CrystalHD: Disabling work-around for packed b-frame bug\n");
priv->bframe_bug = 0;
}
if (priv->bsfc) {
AVPacket filter_packet = { 0 };
ret = av_packet_ref(&filter_packet, avpkt);
if (ret < 0) {
av_log(avctx, AV_LOG_ERROR, "CrystalHD: mpv4toannexb filter "
"failed to ref input packet\n");
goto exit;
}
ret = av_bsf_send_packet(priv->bsfc, &filter_packet);
if (ret < 0) {
av_log(avctx, AV_LOG_ERROR, "CrystalHD: mpv4toannexb filter "
"failed to send input packet\n");
goto exit;
}
ret = av_bsf_receive_packet(priv->bsfc, &filtered_packet);
if (ret < 0) {
av_log(avctx, AV_LOG_ERROR, "CrystalHD: mpv4toannexb filter "
"failed to receive output packet\n");
goto exit;
}
avpkt = &filtered_packet;
av_packet_unref(&filter_packet);
}
if (avpkt->size < tx_free) {
/*
* Despite being notionally opaque, either libcrystalhd or
* the hardware itself will mangle pts values that are too
* small or too large. The docs claim it should be in units
* of 100ns. Given that we're nominally dealing with a black
* box on both sides, any transform we do has no guarantee of
* avoiding mangling so we need to build a mapping to values
* we know will not be mangled.
*/
uint64_t pts = opaque_list_push(priv, avpkt->pts);
if (!pts) {
ret = AVERROR(ENOMEM);
goto exit;
}
av_log(priv->avctx, AV_LOG_VERBOSE,
"input \"pts\": %"PRIu64"\n", pts);
bc_ret = DtsProcInput(dev, avpkt->data, avpkt->size, pts, 0);
if (bc_ret == BC_STS_BUSY) {
av_log(avctx, AV_LOG_WARNING,
"CrystalHD: ProcInput returned busy\n");
ret = AVERROR(EAGAIN);
goto exit;
} else if (bc_ret != BC_STS_SUCCESS) {
av_log(avctx, AV_LOG_ERROR,
"CrystalHD: ProcInput failed: %u\n", ret);
ret = -1;
goto exit;
}
} else {
av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: Input buffer full\n");
ret = AVERROR(EAGAIN);
goto exit;
}
} else {
av_log(avctx, AV_LOG_INFO, "CrystalHD: No more input data\n");
priv->draining = 1;
ret = AVERROR_EOF;
goto exit;
}
exit:
av_packet_unref(&filtered_packet);
return ret;
}
static int crystalhd_receive_frame(AVCodecContext *avctx, AVFrame *frame)
{
BC_STATUS bc_ret;
BC_DTS_STATUS decoder_status = { 0, };
CopyRet rec_ret;
CHDContext *priv = avctx->priv_data;
HANDLE dev = priv->dev;
int got_frame = 0;
av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: receive_frame\n");
do {
bc_ret = DtsGetDriverStatus(dev, &decoder_status);
if (bc_ret != BC_STS_SUCCESS) {
av_log(avctx, AV_LOG_ERROR, "CrystalHD: GetDriverStatus failed\n");
return -1;
}
if (decoder_status.ReadyListCount == 0) {
av_log(avctx, AV_LOG_INFO, "CrystalHD: Insufficient frames ready. Returning\n");
got_frame = 0;
rec_ret = RET_OK;
break;
}
rec_ret = receive_frame(avctx, frame, &got_frame);
} while (rec_ret == RET_COPY_AGAIN);
if (rec_ret == RET_ERROR) {
return -1;
} else if (got_frame == 0) {
return priv->draining ? AVERROR_EOF : AVERROR(EAGAIN);
} else {
return 0;
}
}
#define DEFINE_CRYSTALHD_DECODER(x, X) \
static const AVClass x##_crystalhd_class = { \
.class_name = #x "_crystalhd", \
.item_name = av_default_item_name, \
.option = options, \
.version = LIBAVUTIL_VERSION_INT, \
}; \
AVCodec ff_##x##_crystalhd_decoder = { \
.name = #x "_crystalhd", \
.long_name = NULL_IF_CONFIG_SMALL("CrystalHD " #X " decoder"), \
.type = AVMEDIA_TYPE_VIDEO, \
.id = AV_CODEC_ID_##X, \
.priv_data_size = sizeof(CHDContext), \
.priv_class = &x##_crystalhd_class, \
.init = init, \
.close = uninit, \
.send_packet = crystalhd_decode_packet, \
.receive_frame = crystalhd_receive_frame, \
.flush = flush, \
.capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_AVOID_PROBING, \
.pix_fmts = (const enum AVPixelFormat[]){AV_PIX_FMT_YUYV422, AV_PIX_FMT_NONE}, \
};
#if CONFIG_H264_CRYSTALHD_DECODER
DEFINE_CRYSTALHD_DECODER(h264, H264)
#endif
#if CONFIG_MPEG2_CRYSTALHD_DECODER
DEFINE_CRYSTALHD_DECODER(mpeg2, MPEG2VIDEO)
#endif
#if CONFIG_MPEG4_CRYSTALHD_DECODER
DEFINE_CRYSTALHD_DECODER(mpeg4, MPEG4)
#endif
#if CONFIG_MSMPEG4_CRYSTALHD_DECODER
DEFINE_CRYSTALHD_DECODER(msmpeg4, MSMPEG4V3)
#endif
#if CONFIG_VC1_CRYSTALHD_DECODER
DEFINE_CRYSTALHD_DECODER(vc1, VC1)
#endif
#if CONFIG_WMV3_CRYSTALHD_DECODER
DEFINE_CRYSTALHD_DECODER(wmv3, WMV3)
#endif
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